Isolation transformer 4500W Auto 115/230V Victron Energy - ITR050452042

Isolation Transformer 4500W Auto 115/230V — is a high-quality isolation transformer from Victron Energy, designed to ensure maximum safety and complete protection of watercraft from galvanic corrosion. The device completely eliminates any electrical continuity between the AC shore power grid and the boat, making the use of galvanic isolators and polarity alarms redundant.

The main advantage of the 4500W Auto model is its ability to automatically adapt to the shore power input voltage, providing a stable power supply to the onboard equipment without the need for manual configuration switching.

Key Benefits of the Isolation Transformer 4500W Auto

• Automatic voltage switching – the intelligent system independently detects input network parameters and switches between 115 V or 230 V modes.

• Complete protection against galvanic corrosion – due to 100% isolation of the vessel's hull from the shore grounding, the device prevents the destruction of anodes, shafts, and propellers.

• Built-in Soft Start function – soft start is a standard option that effectively prevents shore fuses from tripping due to the high inrush current of the transformer.

• Toroidal transformer type – the use of advanced technologies allowed achieving a low noise level and significantly reducing the overall weight of the device.

• Guaranteed onboard power grid safety – isolation allows residual current devices (RCD / GFCI) and fuses to operate properly in the event of a short circuit to the metal parts of the vessel.

• Integrated circuit breaker – additional protection of the input circuit against overloads.

Technological Features

Auto-switching

• When connected to a grid with a voltage within 88 V – 130 V, the device automatically switches to 115 V operating mode.
• When connected to a grid with a voltage within 185 V – 250 V, the system switches to the 230 V range.
• To compensate for voltage drops in cables, the input AC voltage value is increased at the output in a 1:1.05 ratio.

Elimination of Galvanic Corrosion

• Direct connection of the grounding cable from the shore line to the metal elements of the boat creates a galvanic couple in the water, leading to rapid electrolytic corrosion of metals.
• The isolation transformer completely breaks this connection: shore power is supplied exclusively to the primary winding, while the ship's electrical system is powered from the isolated secondary winding.
• Corrosion can occur on any type of vessel (not only metal or aluminum) where metal parts (shaft or propeller) come into contact with water.

Ensuring Passenger and Equipment Protection

• Simply disconnecting the ground without a transformer is extremely dangerous, as fuses and GFCIs will not trip if a phase shorts to the hull.
• By connecting all metal elements of the vessel to the neutral terminal on the secondary winding of the transformer, any current leakage or short circuit instantly trips the protective circuit breakers or GFCIs.
• To achieve the maximum safety level, it is recommended to ground the neutral of the transformer's secondary winding when the vessel is out of the water (on land).

Usage Scenarios

• Marine and river vessels, boats, yachts — reliable protection against the destruction of propeller and shaft group elements during long-term mooring at the pier with connected shore power.
• Power supply systems with increased safety requirements in conditions of direct contact with water (salt or fresh).
• Objects traveling between regions with different voltage standards (e.g., transition between European 230 V and American 115 V shore power grids).

Technical Specifications

Why Buy from Total-Energo LLC

• Official supplier of Victron Energy products
• Consultations on selecting transformers for specific tasks
• Full technical support and warranty service
• Delivery throughout Ukraine